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authorMary Strodl <mstrodl@csh.rit.edu>2024-10-09 09:11:31 -0400
committerBartosz Golaszewski <bartosz.golaszewski@linaro.org>2024-10-14 09:07:32 +0200
commitc46a74ff05c0ac76ba11ef21c930c3b447abf31a (patch)
tree8df67dc1d35adcee12f79e6832995ef741617518 /tools/perf/scripts/python/export-to-postgresql.py
parentgpio: aspeed: Support G7 Aspeed gpio controller (diff)
downloadwireguard-linux-c46a74ff05c0ac76ba11ef21c930c3b447abf31a.tar.xz
wireguard-linux-c46a74ff05c0ac76ba11ef21c930c3b447abf31a.zip
gpio: add support for FTDI's MPSSE as GPIO
FTDI FT2232H is a USB to GPIO chip. Sealevel produces some devices with this chip. FT2232H presents itself as a composite device with two interfaces (each is an "MPSSE"). Each MPSSE has two banks (high and low) of 8 GPIO each. I believe some MPSSE's have only one bank, but I don't know how to identify them (I don't have any for testing) and as a result are unsupported for the time being. Additionally, this driver provides software polling-based interrupts for edge detection. For the Sealevel device I have to test with, this works well because there is hardware debouncing. From talking to Sealevel's people, this is their preferred way to do edge detection. Signed-off-by: Mary Strodl <mstrodl@csh.rit.edu> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Link: https://lore.kernel.org/r/20241009131131.1618329-1-mstrodl@csh.rit.edu Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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